Geometry

Question Analysis

The main focus of this question is to test the understanding of the definition of the secant trigonometric ratio in a right - triangle.

Key Concept Explanation

In a right - triangle, for an acute angle , the secant (sec) is defined as the ratio of the length of the hypotenuse to the length of the side adjacent to the angle. That is, .

Step - by - Step Solution

This is a recall - based question. We just need to remember the definition of the secant function. There is no calculation involved.

Option Analysis

A.Sec = : This is the formula for the tangent function (), not secant, so it is incorrect.

B.Sec = : This is the correct formula for secant, as per the definition.

C.Sec =